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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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44 kBGRA, | 44 kBGRA, |
45 }; | 45 }; |
46 | 46 |
47 // This is the max PSNR value our algorithms can return. | 47 // This is the max PSNR value our algorithms can return. |
48 const double kPerfectPSNR = 48.0f; | 48 const double kPerfectPSNR = 48.0f; |
49 | 49 |
50 // Conversion between the RawVideoType and the LibYuv videoType. | 50 // Conversion between the RawVideoType and the LibYuv videoType. |
51 // TODO(wu): Consolidate types into one type throughout WebRtc. | 51 // TODO(wu): Consolidate types into one type throughout WebRtc. |
52 VideoType RawVideoTypeToCommonVideoVideoType(RawVideoType type); | 52 VideoType RawVideoTypeToCommonVideoVideoType(RawVideoType type); |
53 | 53 |
54 // Align integer values. | |
55 // Input: | |
56 // - value : Input value to be aligned. | |
57 // - alignment : Alignment basis (power of 2). | |
58 // Return value: An aligned form of the input value. | |
59 int AlignInt(int value, int alignment); | |
60 | |
61 // Align stride values for I420 Video frames. | |
62 // Input: | |
63 // - width : Image width. | |
64 // - stride_y : Pointer to the stride of the y plane. | |
65 // - stride_uv: Pointer to the stride of the u and v planes (setting identical | |
66 // values for both). | |
67 // Setting 16 byte alignment. | |
68 void Calc16ByteAlignedStride(int width, int* stride_y, int* stride_uv); | |
69 | |
70 // Calculate the required buffer size. | 54 // Calculate the required buffer size. |
71 // Input: | 55 // Input: |
72 // - type :The type of the designated video frame. | 56 // - type :The type of the designated video frame. |
73 // - width :frame width in pixels. | 57 // - width :frame width in pixels. |
74 // - height :frame height in pixels. | 58 // - height :frame height in pixels. |
75 // Return value: :The required size in bytes to accommodate the specified | 59 // Return value: :The required size in bytes to accommodate the specified |
76 // video frame. | 60 // video frame. |
77 size_t CalcBufferSize(VideoType type, int width, int height); | 61 size_t CalcBufferSize(VideoType type, int width, int height); |
78 | 62 |
79 // TODO(mikhal): Add unit test for these two functions and determine location. | 63 // TODO(mikhal): Add unit test for these two functions and determine location. |
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121 // - src_frame : Reference to a source frame. | 105 // - src_frame : Reference to a source frame. |
122 // - dst_video_type : Type of output video. | 106 // - dst_video_type : Type of output video. |
123 // - dst_sample_size : Required only for the parsing of MJPG. | 107 // - dst_sample_size : Required only for the parsing of MJPG. |
124 // - dst_frame : Pointer to a destination frame. | 108 // - dst_frame : Pointer to a destination frame. |
125 // Return value: 0 if OK, < 0 otherwise. | 109 // Return value: 0 if OK, < 0 otherwise. |
126 // It is assumed that source and destination have equal height. | 110 // It is assumed that source and destination have equal height. |
127 int ConvertFromI420(const VideoFrame& src_frame, | 111 int ConvertFromI420(const VideoFrame& src_frame, |
128 VideoType dst_video_type, | 112 VideoType dst_video_type, |
129 int dst_sample_size, | 113 int dst_sample_size, |
130 uint8_t* dst_frame); | 114 uint8_t* dst_frame); |
131 // ConvertFrom YV12. | |
132 // Interface - same as above. | |
133 int ConvertFromYV12(const VideoFrame& src_frame, | |
134 VideoType dst_video_type, | |
135 int dst_sample_size, | |
136 uint8_t* dst_frame); | |
137 | 115 |
138 // The following list describes designated conversion functions which | |
139 // are not covered by the previous general functions. | |
140 // Input and output descriptions mostly match the above descriptions, and are | |
141 // therefore omitted. | |
142 int ConvertRGB24ToARGB(const uint8_t* src_frame, | |
143 uint8_t* dst_frame, | |
144 int width, int height, | |
145 int dst_stride); | |
146 int ConvertNV12ToRGB565(const uint8_t* src_frame, | |
147 uint8_t* dst_frame, | |
148 int width, int height); | |
149 | |
150 // Compute PSNR for an I420 frame (all planes). | 116 // Compute PSNR for an I420 frame (all planes). |
151 // Returns the PSNR in decibel, to a maximum of kInfinitePSNR. | 117 // Returns the PSNR in decibel, to a maximum of kInfinitePSNR. |
152 double I420PSNR(const VideoFrame* ref_frame, const VideoFrame* test_frame); | 118 double I420PSNR(const VideoFrame* ref_frame, const VideoFrame* test_frame); |
153 // Compute SSIM for an I420 frame (all planes). | 119 // Compute SSIM for an I420 frame (all planes). |
154 double I420SSIM(const VideoFrame* ref_frame, const VideoFrame* test_frame); | 120 double I420SSIM(const VideoFrame* ref_frame, const VideoFrame* test_frame); |
155 | 121 |
156 } // namespace webrtc | 122 } // namespace webrtc |
157 | 123 |
158 #endif // WEBRTC_COMMON_VIDEO_LIBYUV_INCLUDE_WEBRTC_LIBYUV_H_ | 124 #endif // WEBRTC_COMMON_VIDEO_LIBYUV_INCLUDE_WEBRTC_LIBYUV_H_ |
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